I have built a simple amplifier circuit using a EM11G LM 386N-1 amplifier chip which follows the following design (cap and resister values are slightly different):
I connected this mic to the circuit, and the circuit produce some good sound in a pair of headphones:
After this mic was damaged, I tried to replace it with this mic:
I connect it so that the left and right channel are connected to the 'input' and the ground ring is connect to the common ground.
The new mic does not work in this configuration. The sound that should be picked up by this mic is not coming out of the headphones, not even slightly. If I listen closely, I think I can hear a faint radio station, but that's it. I know that the mic is working because I plugged it into a voice recorded and tested it. No problems.
Is there something that the voice recorded is doing differently to cause the mic to work? How do I need to change the circuit so that the mic will be heard?
Edit: Would adding a preamp like this (between the mic and 386N) possibly correct the problem?